Calcium Tablets

Our family was sitting down to have our wholesome dinner together, when dad gave mom one of the new calcium pills we bought for her while shopping. She acted a little intimidated by how big they were...
Being the good engineers that my father and I am, we pulled out a postal scale, and a periodic table, and between weighing 10 pills (for high accuracy) and calculating the molar mass of Calcium Carbonate (otherwise known as chalk), our calculations showed that 1.5 grams of the 2.6 gram pill is chalk, so it's at least of the same order of magnitude. Most of the rest of the mass is the fat coating that made the pills, apparently, go down relatively easily, so says my mother.

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